Nitrogen-doped porous vertical graphene nanowall array and its preparation method and application
A graphene nanowall and nitrogen doping technology, applied in the field of nanomaterials, can solve the problems of difficult to obtain VAGN, high technical requirements and high cost of PECVD, achieve easy control of reaction conditions and processes, no damage to the structure, prevent The effect of stacking between layers
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Embodiment 1
[0035] A method for preparing a nitrogen-doped porous vertical graphene nanowall array includes the following steps:
[0036] (1) Activate the carbon cloth and prepare the nickel hydroxide precursor growth solution, cut the carbon cloth into a size of 1cm*2cm, arrange the carbon in a 1:1 ethanol and 30% hydrogen peroxide solution oven and heat it to 60 Keep at ℃ for 24 hours to obtain activated carbon cloth. The nickel hydroxide precursor growth solution formula is a mixed solution of 0.15M / L nickel chloride hexahydrate and 0.3M / L hexamethylenetetramine.
[0037] (2) The activated carbon is placed in the nickel hydroxide precursor growth solution, and heated to 100° C. in an oven for 10 hours to grow nickel hydroxide to obtain nickel hydroxide / carbon cloth, and the nickel hydroxide grows on the carbon cloth. The scanning electron microscope (SEM) image of nickel hydroxide / carbon cloth is as follows figure 1 Shown.
[0038] (3) Place the obtained nickel hydroxide / carbon in a mixed s...
Embodiment 2
[0043] A method for preparing a nitrogen-doped porous vertical graphene nanowall array includes the following steps:
[0044] (1) Activate the carbon cloth and prepare the nickel hydroxide precursor growth solution, cut the carbon cloth into a size of 1cm*2cm, arrange the carbon in a 1:1 ethanol and 30% hydrogen peroxide solution oven and heat it to 60 Keep at ℃ for 24 hours to obtain activated carbon cloth. The nickel hydroxide precursor growth solution formula is a mixed solution of 0.15M / L nickel chloride hexahydrate and 0.3M / L hexamethylenetetramine.
[0045] (2) The activated carbon is placed in the nickel hydroxide precursor growth solution, and heated to 100° C. in an oven for 10 hours to grow nickel hydroxide to obtain a nickel hydroxide / carbon cloth composite.
[0046] (3) Place the obtained nickel hydroxide / carbon in a mixed solution of dopamine hydrochloride-Tris, the concentration of Tris is 1.21g / L, the concentration range of dopamine hydrochloride is 2g / L, and the reac...
Embodiment 3
[0051] A method for preparing a nitrogen-doped porous vertical graphene nanowall array includes the following steps:
[0052] (1) Activate the carbon cloth and prepare the nickel hydroxide precursor growth solution, cut the carbon cloth into a size of 1cm*2cm, arrange the carbon in a 1:1 ethanol and 30% hydrogen peroxide solution oven and heat it to 60 Keep at ℃ for 24 hours to obtain activated carbon cloth. The nickel hydroxide precursor growth solution formula is a mixed solution of 0.15M / L nickel chloride hexahydrate and 0.3M / L hexamethylenetetramine.
[0053] (2) The activated carbon is placed in the nickel hydroxide precursor growth solution, and heated to 100° C. in an oven for 10 hours to grow nickel hydroxide to obtain a nickel hydroxide / carbon cloth composite.
[0054] (3) Place the obtained nickel hydroxide / carbon in a mixed solution of dopamine hydrochloride-Tris, the concentration of Tris is 1.21g / L, the concentration range of dopamine hydrochloride is 2g / L, and the reac...
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